I'm used to declaring main() as
int main (int argc, const char * argv[])
Attempting to use boost::program_options with a const char * argv[]
results in the compilation errors appended below on SLES 9 with gcc
3.3.3. Similar errors are reported on Mac OS 10.4.4 with gcc 4.0.1.
First, I'd consider it an enhancement if program_options were to
support a const char * argv[].
Second, is program_options actually modifying argv? Note the last error:
"/usr/include/g++/bits/basic_string.tcc:160: error: assignment of
read-only
location"
Regards,
-Steve
/usr/bin/g++ -c -UNDEBUG -DDEBUG -Dpowerpc -Ddarwin6_0 -I/home/smb/
boston/HEAD/boston/common/iscsi/src -I/home/smb/boston/HEAD/boston/
common/iscsi/share/include -g -O0 -L/home/smb/boston/HEAD/boston/
common/iscsi/share/lib -MD -o iscsi_dvd_targetd.o
iscsi_dvd_targetd.cpp
iscsi_dvd_targetd.cpp: In function `int main(int, const char**)':
iscsi_dvd_targetd.cpp:31: error: no matching function for call to
`store(
boost::program_options::basic_parsed_options<const char>,
boost::program_options::variables_map&)'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/variables_map.hpp:138: error: candidates
are: void boost::program_options::store(const
boost::program_options::basic_parsed_options<char>&,
boost::program_options::variables_map&, bool)
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/variables_map.hpp:146: error:
void boost::program_options::store(const
boost::program_options::basic_parsed_options&,
boost::program_options::variables_map&)
/usr/include/g++/bits/stl_alloc.h: At global scope:
/usr/include/g++/bits/stl_alloc.h: In instantiation of
`std::allocator<const char>':
/usr/include/g++/bits/basic_string.h:116: instantiated from
`std::basic_string'
/usr/include/g++/bits/stl_vector.h:162: instantiated from
`std::_Vector_base<_Tp, _Alloc>::~_Vector_base() [with _Tp =
std::basic_string, _Alloc =
std::allocator >]'
/usr/include/g++/bits/stl_vector.h:229: instantiated from
`std::vector<_Tp, _Alloc>::vector(typename std::_Vector_base<_Tp,
_Alloc>::allocator_type&) [with _Tp = std::basic_string, _Alloc =
std::allocator >]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:18: instantiated from
`std::vector,
std::allocator<_CharT> >, std::allocator, std::allocator<_CharT> > > >
boost::program_options::detail::make_vector(Iterator, Iterator) [with
charT = const char, Iterator = const char**]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:42: instantiated from
`boost::program_options::basic_command_line_parser<charT>::basic_command
_line_parser(int, charT**) [with charT = const char]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:118: instantiated from
`boost::program_options::basic_parsed_options<charT>
boost::program_options::parse_command_line(int, charT**, const
boost::program_options::options_description&, int,
boost::function1, const
std::string&, std::allocatorboost::function_base >) [with charT =
const char]'
iscsi_dvd_targetd.cpp:31: instantiated from here
/usr/include/g++/bits/stl_alloc.h:662: error: `const _Tp*
std::allocator<_Alloc>::address(const _Tp&) const [with _Tp =
const char]'
and `_Tp* std::allocator<_Alloc>::address(_Tp&) const [with _Tp =
const
char]' cannot be overloaded
/usr/include/g++/bits/basic_string.tcc: In instantiation of
`std::basic_string':
/usr/include/g++/bits/stl_vector.h:162: instantiated from
`std::_Vector_base<_Tp, _Alloc>::~_Vector_base() [with _Tp =
std::basic_string, _Alloc =
std::allocator >]'
/usr/include/g++/bits/stl_vector.h:229: instantiated from
`std::vector<_Tp, _Alloc>::vector(typename std::_Vector_base<_Tp,
_Alloc>::allocator_type&) [with _Tp = std::basic_string, _Alloc =
std::allocator >]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:18: instantiated from
`std::vector,
std::allocator<_CharT> >, std::allocator, std::allocator<_CharT> > > >
boost::program_options::detail::make_vector(Iterator, Iterator) [with
charT = const char, Iterator = const char**]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:42: instantiated from
`boost::program_options::basic_command_line_parser<charT>::basic_command
_line_parser(int, charT**) [with charT = const char]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:118: instantiated from
`boost::program_options::basic_parsed_options<charT>
boost::program_options::parse_command_line(int, charT**, const
boost::program_options::options_description&, int,
boost::function1, const
std::string&, std::allocatorboost::function_base >) [with charT =
const char]'
iscsi_dvd_targetd.cpp:31: instantiated from here
/usr/include/g++/bits/basic_string.h:307: error: `static void
std::basic_string<_CharT, _Traits, _Alloc>::_S_copy_chars(_CharT*,
__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >) [with _CharT =
const char,
_Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]
' and `static void std::basic_string<_CharT, _Traits,
_Alloc>::_S_copy_chars(_CharT*,
__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >) [with _CharT =
const char,
_Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]
' cannot be overloaded
/usr/include/g++/bits/basic_string.h:315: error: `static void
std::basic_string<_CharT, _Traits, _Alloc>::_S_copy_chars
(_CharT*, const
_CharT*, const _CharT*) [with _CharT = const char, _Traits =
std::char_traits<const char>, _Alloc = std::allocator<const
char>]' and `
static void std::basic_string<_CharT, _Traits,
_Alloc>::_S_copy_chars(_CharT*, _CharT*, _CharT*) [with _CharT =
const char,
_Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]
' cannot be overloaded
/usr/include/g++/bits/basic_string.h:636: error:
`std::basic_string<_CharT,
_Traits, _Alloc>& std::basic_string<_CharT, _Traits,
_Alloc>::replace(__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >, const _CharT*,
const _CharT*)
[with _CharT = const char, _Traits = std::char_traits<const
char>, _Alloc =
std::allocator<const char>]' and `std::basic_string<_CharT, _Traits,
_Alloc>& std::basic_string<_CharT, _Traits,
_Alloc>::replace(__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >, _CharT*, _CharT*)
[with _CharT
= const char, _Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]' cannot be overloaded
/usr/include/g++/bits/basic_string.h:647: error:
`std::basic_string<_CharT,
_Traits, _Alloc>& std::basic_string<_CharT, _Traits,
_Alloc>::replace(__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >) [with _CharT =
const char,
_Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]
' and `std::basic_string<_CharT, _Traits, _Alloc>&
std::basic_string<_CharT,
_Traits, _Alloc>::replace(__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >,
__gnu_cxx::__normal_iterator >) [with _CharT =
const char,
_Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]
' cannot be overloaded
/usr/include/g++/bits/basic_string.h: In member function `
std::basic_string<_CharT, _Traits, _Alloc>::_Rep*
std::basic_string<_CharT,
_Traits, _Alloc>::_M_rep() const [with _CharT = const char,
_Traits =
std::char_traits<const char>, _Alloc = std::allocator<const char>]':
/usr/include/g++/bits/basic_string.h:355: instantiated from
`std::basic_string<_CharT, _Traits, _Alloc>::~basic_string() [with
_CharT = const char, _Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:22: instantiated from
`std::vector,
std::allocator<_CharT> >, std::allocator, std::allocator<_CharT> > > >
boost::program_options::detail::make_vector(Iterator, Iterator) [with
charT = const char, Iterator = const char**]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:42: instantiated from
`boost::program_options::basic_command_line_parser<charT>::basic_command
_line_parser(int, charT**) [with charT = const char]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:118: instantiated from
`boost::program_options::basic_parsed_options<charT>
boost::program_options::parse_command_line(int, charT**, const
boost::program_options::options_description&, int,
boost::function1, const
std::string&, std::allocatorboost::function_base >) [with charT =
const char]'
iscsi_dvd_targetd.cpp:31: instantiated from here
/usr/include/g++/bits/basic_string.h:257: error: reinterpret_cast
from `const
char*' to `std::basic_string::_Rep*' casts away const (or volatile)
/usr/include/g++/bits/basic_string.tcc: In member function `_CharT*
std::basic_string<_CharT, _Traits, _Alloc>::_Rep::_M_clone(const
_Alloc&,
typename _Alloc::size_type) [with _CharT = const char, _Traits =
std::char_traits<const char>, _Alloc = std::allocator<const char>]':
/usr/include/g++/bits/basic_string.h:195: instantiated from
`_CharT* std::basic_string<_CharT, _Traits, _Alloc>::_Rep::_M_grab
(const _Alloc&, const _Alloc&) [with _CharT = const char, _Traits =
std::char_traits<const char>, _Alloc = std::allocator<const char>]'
/usr/include/g++/bits/basic_string.tcc:195: instantiated from
`std::basic_string<_CharT, _Traits, _Alloc>::basic_string(const
std::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = const
char, _Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]'
/usr/include/g++/bits/stl_construct.h:78: instantiated from `void
std::_Construct(_T1*, const _T2&) [with _T1 = std::basic_string, _T2
= std::basic_string]'
/usr/include/g++/bits/stl_vector.h:599: instantiated from `void
std::vector<_Tp, _Alloc>::push_back(const _Tp&) [with _Tp =
std::basic_string, _Alloc =
std::allocator >]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:22: instantiated from
`std::vector,
std::allocator<_CharT> >, std::allocator, std::allocator<_CharT> > > >
boost::program_options::detail::make_vector(Iterator, Iterator) [with
charT = const char, Iterator = const char**]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:42: instantiated from
`boost::program_options::basic_command_line_parser<charT>::basic_command
_line_parser(int, charT**) [with charT = const char]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:118: instantiated from
`boost::program_options::basic_parsed_options<charT>
boost::program_options::parse_command_line(int, charT**, const
boost::program_options::options_description&, int,
boost::function1, const
std::string&, std::allocatorboost::function_base >) [with charT =
const char]'
iscsi_dvd_targetd.cpp:31: instantiated from here
/usr/include/g++/bits/basic_string.tcc:596: error: assignment of read-
only
location
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/convert.hpp: In
function `std::vectorstd::string >
boost::program_options::to_internal(const std::vector >&) [with T = std::basic_string]':
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:42: instantiated from
`boost::program_options::basic_command_line_parser<charT>::basic_command
_line_parser(int, charT**) [with charT = const char]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:118: instantiated from
`boost::program_options::basic_parsed_options<charT>
boost::program_options::parse_command_line(int, charT**, const
boost::program_options::options_description&, int,
boost::function1, const
std::string&, std::allocatorboost::function_base >) [with charT =
const char]'
iscsi_dvd_targetd.cpp:31: instantiated from here
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/convert.hpp:79: error: no
matching function for call to `to_internal(const
std::basic_string&)'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/convert.hpp:70: error: candidates
are: std::string boost::program_options::to_internal(const
std::string&)
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/convert.hpp:72: error:
std::string boost::program_options::to_internal(const
std::wstring&)
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp: In
member function `boost::program_options::basic_parsed_options<charT>
boost::program_options::basic_command_line_parser<charT>::run()
[with charT
= const char]':
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:118: instantiated from
`boost::program_options::basic_parsed_options<charT>
boost::program_options::parse_command_line(int, charT**, const
boost::program_options::options_description&, int,
boost::function1, const
std::string&, std::allocatorboost::function_base >) [with charT =
const char]'
iscsi_dvd_targetd.cpp:31: instantiated from here
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:106: error: no
matching function for call to `
boost::program_options::basic_parsed_options<const char>::
basic_parsed_options
(boost::program_options::basic_parsed_options<char>&)'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:118: error: candidates
are: boost::program_options::basic_parsed_options<const
char>::basic_parsed_options(const
boost::program_options::basic_parsed_options<const char>&)
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/parsers.hpp:35: error:
boost::program_options::basic_parsed_options<charT>::basic_parsed_option
s(const
boost::program_options::options_description*) [with charT = const
char]
/usr/include/g++/bits/basic_string.tcc: In static member function
`static
_CharT* std::basic_string<_CharT, _Traits, _Alloc>::_S_construct
(_InIter,
_InIter, const _Alloc&, std::forward_iterator_tag) [with _FwdIter
= const
char*, _CharT = const char, _Traits = std::char_traits<const
char>, _Alloc =
std::allocator<const char>]':
/usr/include/g++/bits/basic_string.h:670: instantiated from `static
_CharT* std::basic_string<_CharT, _Traits, _Alloc>::_S_construct_aux
(_InIter, _InIter, const _Alloc&, __false_type) [with _InIter = const
char*, _CharT = const char, _Traits = std::char_traits<const char>,
_Alloc = std::allocator<const char>]'
/usr/include/g++/bits/basic_string.h:687: instantiated from `static
_CharT* std::basic_string<_CharT, _Traits, _Alloc>::_S_construct
(_InIter, _InIter, const _Alloc&) [with _InIter = const char*, _CharT
= const char, _Traits = std::char_traits<const char>, _Alloc =
std::allocator<const char>]'
/usr/include/g++/bits/basic_string.tcc:229: instantiated from
`std::basic_string<_CharT, _Traits, _Alloc>::basic_string(const
_CharT*, const _Alloc&) [with _CharT = const char, _Traits =
std::char_traits<const char>, _Alloc = std::allocator<const char>]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:22: instantiated from
`std::vector,
std::allocator<_CharT> >, std::allocator, std::allocator<_CharT> > > >
boost::program_options::detail::make_vector(Iterator, Iterator) [with
charT = const char, Iterator = const char**]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:42: instantiated from
`boost::program_options::basic_command_line_parser<charT>::basic_command
_line_parser(int, charT**) [with charT = const char]'
/home/smb/boston/HEAD/boston/common/iscsi/share/include/boost/
program_options/detail/parsers.hpp:118: instantiated from
`boost::program_options::basic_parsed_options<charT>
boost::program_options::parse_command_line(int, charT**, const
boost::program_options::options_description&, int,
boost::function1, const
std::string&, std::allocatorboost::function_base >) [with charT =
const char]'
iscsi_dvd_targetd.cpp:31: instantiated from here
/usr/include/g++/bits/basic_string.tcc:160: error: assignment of read-
only
location
make: *** [iscsi_dvd_targetd.o] Error 1
--------
Steve Byan
Software Architect
Egenera, Inc.
165 Forest Street
Marlboro, MA 01752
(508) 858-3125
